original description
Sapoundjieva, V. 1964. Les Fossiles de Bulgarie. VIb. Paléogène Echinoidea. Académie des Sciences de Bulgarie, Sofia, 1-64 pp.
page(s): 30, 58-59; pl. 14: figs. 2 a-c [details]
basis of record
Kier, P. M. & Lawson, M. H. 1978. Index of living and fossil echinoids 1924-1970. Smithsonian Contributions to Paleobiology 34, 1-182., available online at https://doi.org/10.5479/si.00810266.34.1
page(s): 53 [details] Available for editors
From editor or global species database
Distribution Bulgaria [details]
Fossil Range Ypresian, Early Eocene [details]